there is a way !!! i had some kind of this problem too !!
go to Documents\My Games\Unreal Tournament 3\UTGame\SaveData and delete your account your account with which you has the problem ! like >> Basher_King.ue3profile and Basher_King.ue3messages
after that try to log in again and try to play
hope it helps you ! dunno if i had that problem , but i looks like it was the same
ps. sorry for my english
